61q: correlation coefficient tends to lie between ?
62q: best disinfectant for cholera stool ?
a. bleaching powder
b. cresol
c. phenol
d. lime
63q: society is defined as ?
a. a conglomeration people
b. a group of people bound with social norms
c. an association with regulated membership
d. an association patterned the norms of interaction
64q: incidence of disease among exposed minus that of non exposed is equal to ?
a. relative risk
b. attributable risk
c. odd ratio
d. none of the above
65q: after vaccination against Japanese encephalitis , immunity develops in how many days ?
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